Au nanospheres modified boron-doped diamond microelectrode grown via hydrogen plasma etching solid doping source for dopamine detection

Yao, Kaili; Tan, Xuezhi; Dai, Bing; Bai, Jie; Sun, Qiaoyang; Cao, Wenxin; Zhao, Junhong; Yang, Lei; Han, Jiecai; Zhu, Jiaqi

doi:10.1016/j.jmst.2020.02.003

Cited by 15 publications

(4 citation statements)

References 21 publications

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“…Moreover, the LOD toward DA by spectroscopic analysis was determined to be 10 nM (S/N = 3). This LOD is comparable to many reported methods (Supplementary Table S2) (Yu et al, 2014;Guo et al, 2018;Ling et al, 2018;Wang et al, 2018;Naik et al, 2019;Ding et al, 2020;Huang et al, 2020;Liu et al, 2020;Teng et al, 2020;Yao et al, 2020;Baluchova et al, 2021;Chen et al, 2021;Sun et al, 2021;Amara et al, 2022).…”

Section: Da Sensing In Aqueous Mediasupporting

confidence: 86%

Gold Nanocluster-Encapsulated Hyperbranched Polyethyleneimine for Selective and Ratiometric Dopamine Analyses by Enhanced Self-Polymerization

Zhang

Liu

et al. 2022

Front. Chem.

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The exploitation of selective and sensitive dopamine (DA) sensors is essential to more deeply understand its biological function and diagnosis of related diseases. In this study, gold nanocluster-encapsulated hyperbranched polyethyleneimine (hPEI-Au NCs) has been explored as the specific and ratiometric DA nanoprobe through hPEI-assisted DA self-polymerization reactions. The Au NCs encapsulation not only provides a fluorescent internal reference but also enhances the DA self-polymerization by weakening the proton sponge effect of the hPEI layer. Rapid and sensitive DA detection is realized through the proposed hPEI-Au NC nanoprobe with a limit of detection of 10 nM. The favorable selectivity over other possible interferents including amino acids, sugars, and salts is due to the specific self-polymerization reaction. The DA analysis in urine samples with small relative standard deviations has been accomplished with an hPEI-Au NC nanoprobe.

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Section: Da Sensing In Aqueous Mediasupporting

confidence: 86%

Gold Nanocluster-Encapsulated Hyperbranched Polyethyleneimine for Selective and Ratiometric Dopamine Analyses by Enhanced Self-Polymerization

Zhang

Liu

et al. 2022

Front. Chem.

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“…[5,6] Samples were grown at a pressure and an MW power of 128 mbar and 2800 W, respectively, for a growth time of 10 h. The substrate temperature was 750-800 C, measured by a Williamson PRO 92-40-C pyrometer. [35] After growth, the as-grown diamond powders lay loosely on the surface of the graphite plate and were collected by inclining the graphite plates and sweeping the powder into a plastic tray. A detailed description of the apparatus and process can be found elsewhere.…”

Section: Methodsmentioning

confidence: 99%

Hydrophobicity and Adhesion of Aggregated Diamond Particles

Yao

Dai

May

et al. 2020

Physica Status Solidi (a)

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Diamond powders with high hydrophobicity are prepared by etching graphite plates using a hydrogen/argon (H2/Ar) plasma. The morphology and size of the diamond powders are found to vary with the proportion of Ar in H2 from 0% to 50%. Wettability is measured using water contact angle (WCA) measurements giving values between 129.7° and 146.9°. The high hydrophobicity can be ascribed to the aggregated structure of the as‐grown diamond powders. To check this assumption, the aggregated diamond powders are separated into individual particles by mechanical grinding; then, the WCAs of separated as‐grown diamond powders and commercial dispersed diamond powders are compared. The separated diamond surfaces show the lower WCAs of 99.68° and 96.96°. The surface of the aggregated diamond powders also exhibits high adhesion to water. The diamond surface grown in 2% Ar suspends 40 μL of water under a tilt angle of 180°. Such aggregated diamond powders are promising for no‐loss liquid transportation.

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“…8 Moreover, the reactive sites on the BDD anode are sometimes inadequate for effective DET. Methods for increasing the surface functional sites on the BDD anode via metals, 9 metal oxides, 10 and atomic or molecular catalysts 11 have been shown to enhance its electrochemical reactivity in environmental pollutant degradation and energy conversion applications. 12 Substochiometric titanium oxide (Ti 4 O 7 ) is a conductive Magneĺi phase of TiO 2 that is produced via chemical reduction and exhibits high electrical conductivity (about 10 3 S•cm −1 ), variable pore size diameter, and high-level oxygen evolution potential (over 2.5 V vs standard hydrogen electrode).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the reactive sites on the BDD anode are sometimes inadequate for effective DET. Methods for increasing the surface functional sites on the BDD anode via metals, metal oxides, and atomic or molecular catalysts have been shown to enhance its electrochemical reactivity in environmental pollutant degradation and energy conversion applications …”

Section: Introductionmentioning

confidence: 99%

Electrooxidation of Perfluorocarboxylic Acids by an Interfacially Engineered Magnéli Phase Titanium Oxide (Ti₄O₇) Electrode with MXene

Ma,

Gao,

Cheng

et al. 2024

ACS EST Eng.

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Electrochemical advanced oxidative processes (EAOPs) offer promising pathways for the eradication of persistent organic pollutants, such as perfluoroalkanesulfonates (PFSAs) and perfluorocarboxylic acids (PFCAs). Herein, we demonstrated a hybrid electrocatalyst of Magneĺi phase titanium oxide (Ti 4 O 7 )/Ti 3 C 2 T x MXene for EAOP. The perfluorooctanoic acid (PFOA) degradation rate in batch tests by the Ti 4 O 7 /MXene electrode was 2.21 × 10 −2 min −1 , three times faster than that of the Ti 4 O 7 electrode (0.76 × 10 −2 min −1 ). This hybrid Ti 4 O 7 /MXene electrode significantly lowered the interfacial chargetransfer resistance from 54.36 to 7.18 Ω compared with the Ti 4 O 7 electrode. The Ti 4 O 7 /MXene electrode also exhibits excellent stability as tested by 10 consecutive cycles for 30 h under a DC current of 10 mA•cm −2 and reached a stable PFAS degradation (98.1−9.2%). Some degradation isomers and intermediates with lower fluorinated chain lengths were detected. In addition, density functional theory (DFT) calculations indicate a greater charge transfer for PFOA and a lower adsorption energy for hydroxyl radicals (•OH) on Ti 4 O 7 /MXene in comparison with the pristine Ti 4 O 7 , which would facilitate the diffusion of radicals and oxidative reactions with PFCAs. A standardized electric energy consumption per log removal of PFCAs (EE/O) was found to be only 8−14 kWh m −3 , which is among the lowest level of the current literature data. The integration of these hybrid nanomaterials brings forth a unique synergy that holds the capacity to drive enhanced catalytic activity, thereby contributing significantly to the field's pursuit of efficient pollutant removal and environmental remediation.

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Au nanospheres modified boron-doped diamond microelectrode grown via hydrogen plasma etching solid doping source for dopamine detection

Cited by 15 publications

References 21 publications

Gold Nanocluster-Encapsulated Hyperbranched Polyethyleneimine for Selective and Ratiometric Dopamine Analyses by Enhanced Self-Polymerization

Gold Nanocluster-Encapsulated Hyperbranched Polyethyleneimine for Selective and Ratiometric Dopamine Analyses by Enhanced Self-Polymerization

Hydrophobicity and Adhesion of Aggregated Diamond Particles

Electrooxidation of Perfluorocarboxylic Acids by an Interfacially Engineered Magnéli Phase Titanium Oxide (Ti₄O₇) Electrode with MXene

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Au nanospheres modified boron-doped diamond microelectrode grown via hydrogen plasma etching solid doping source for dopamine detection

Cited by 15 publications

References 21 publications

Gold Nanocluster-Encapsulated Hyperbranched Polyethyleneimine for Selective and Ratiometric Dopamine Analyses by Enhanced Self-Polymerization

Gold Nanocluster-Encapsulated Hyperbranched Polyethyleneimine for Selective and Ratiometric Dopamine Analyses by Enhanced Self-Polymerization

Hydrophobicity and Adhesion of Aggregated Diamond Particles

Electrooxidation of Perfluorocarboxylic Acids by an Interfacially Engineered Magnéli Phase Titanium Oxide (Ti4O7) Electrode with MXene

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Product

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About

Electrooxidation of Perfluorocarboxylic Acids by an Interfacially Engineered Magnéli Phase Titanium Oxide (Ti₄O₇) Electrode with MXene